General questions about ClickHouse

Page	Description
What is a columnar database?	Explainer on what a columnar database is.
Does ClickHouse support frequent, concurrent queries?	Information about concurrent query support in ClickHouse.
Does ClickHouse have a cost-based optimizer?	Information about ClickHouse’s query optimizer.
Does ClickHouse support data lakes?	Information about ClickHouse data lake support.
What does “ClickHouse” mean?	Explainer on the meaning of the name “ClickHouse”.
What are the 3rd-party dependencies for running ClickHouse?	Information about ClickHouse third-party dependencies.
Does ClickHouse support distributed JOIN?	Information about distributed JOIN support in ClickHouse.
Does ClickHouse support federated queries?	Information about federated query support in ClickHouse.
How do I contribute code to ClickHouse?	How to contribute code to the ClickHouse project.
Why not use something like MapReduce?	Why MapReduce implementations aren’t appropriate for OLAP scenarios.
What does “Не тормозит” mean?	Explainer on what “не тормозит” means.
What is OLAP?	Explainer on Online Analytical Processing.
What SQL syntax does ClickHouse support?	Information about ClickHouse SQL syntax support.
Does ClickHouse support real-time updates?	Information about real-time updates in ClickHouse.
Who is using ClickHouse?	Learn about who is using ClickHouse.
Why is ClickHouse Keeper recommended over ZooKeeper?	Why ClickHouse Keeper is recommended over ZooKeeper.